Fig. 3.

The frequency and power of the dominant oscillation increases with age (A) The peak frequency of the dominant oscillation between 4-12 Hz is displayed in all participants who exhibited an oscillation. The peak frequency of the dominant oscillation from the parietal-midline electrode cluster (insert) increased in frequency with increasing age. (B) Power of the posterior dominant oscillation trended positively with age. Altogether, these results suggest a shifting of the dominant posterior oscillation from slower theta (4-8 Hz) to faster alpha-range (8-12 Hz) peaks. *** p < 0.0001 ∼ p < 0.1 Grey area is 95 % confidence interval.